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Revision 1af9f68b4a6f8da34481670b9741854081344321 authored by Andrew M. Kuchling on 05 October 2006, 17:18:13 UTC, committed by Andrew M. Kuchling on 05 October 2006, 17:18:13 UTC
Fix segfault when doing string formatting on subclasses of long if __oct__, __hex__ don't return a string. Klocwork 308
1 parent 68e1e03
Tip revision: 1af9f68b4a6f8da34481670b9741854081344321 authored by Andrew M. Kuchling on 05 October 2006, 17:18:13 UTC
[Backport r51248 | neal.norwitz]
[Backport r51248 | neal.norwitz]
Tip revision: 1af9f68
sunaudio.py
"""Interpret sun audio headers."""
MAGIC = '.snd'
class error(Exception):
pass
def get_long_be(s):
"""Convert a 4-char value to integer."""
return (ord(s[0])<<24) | (ord(s[1])<<16) | (ord(s[2])<<8) | ord(s[3])
def gethdr(fp):
"""Read a sound header from an open file."""
if fp.read(4) != MAGIC:
raise error, 'gethdr: bad magic word'
hdr_size = get_long_be(fp.read(4))
data_size = get_long_be(fp.read(4))
encoding = get_long_be(fp.read(4))
sample_rate = get_long_be(fp.read(4))
channels = get_long_be(fp.read(4))
excess = hdr_size - 24
if excess < 0:
raise error, 'gethdr: bad hdr_size'
if excess > 0:
info = fp.read(excess)
else:
info = ''
return (data_size, encoding, sample_rate, channels, info)
def printhdr(file):
"""Read and print the sound header of a named file."""
hdr = gethdr(open(file, 'r'))
data_size, encoding, sample_rate, channels, info = hdr
while info[-1:] == '\0':
info = info[:-1]
print 'File name: ', file
print 'Data size: ', data_size
print 'Encoding: ', encoding
print 'Sample rate:', sample_rate
print 'Channels: ', channels
print 'Info: ', repr(info)
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